Business · 03/05/1999Updated: 10/17/2026 · 1 min read

FDA Approves New Animal Drug for Use in Animal Feeds, Sets Revised Withdrawal Period

The US Food and Drug Administration has amended animal drug regulations to reflect approval of a supplemental new animal drug application filed by PennField Oil Co., setting a revised withdrawal period of 1 day for cattle fed Type B and Type C chlortetracycline feeds.